package main.java;

import java.util.Scanner;

public class hello {

	public static void main(String[] args) {
		Scanner s=new Scanner(System.in);
		while(s.hasNextInt())
		{
		int a=s.nextInt();
		int b=s.nextInt();
		if(a>1000) System.out.println("a<=1000");
		else System.out.println(a+b);}
		
	}

}
